3) Once you have the saturation vapor pressure and actual vapor pressure, relative humidity(RH) can be computed by dividing the actual vapor pressure by the saturation vapor pressure and then multiplying by 100 to convert the quantity to a percent:
RH =(E/Es)*100
RH =(2.1211957981192776150462474985589/6.6907349413770067935260257174923)*100
RH = 0.31703479762758596814611114744566 * 100
RH = 31.703479762758596814611114744566%
SO... Humidity is 31.7%

And note here that ** means to the power of. I figured I'de clue anyone in that is as ignorant is I was when I had to figure it out.